Portable rubbing-machine.



J6 i U 34 4 4755 V. J. REED.

PORTABLE RUBBING MACHINE. APPLICATION FILED AUG. 9, 1913.

1,099,61 7 Patented June 9, 1914.

2 SHEETS-SHEET 1.

46' I j WITNESSES- id 4 J6 J LVVENI/OR:

J064A W V. J. REED.

PORTABLE RUBBING MACHINE.

APPLICATION FILED AUG. 9, 1913.

LU99 61 7D Patented June 9, 1914.

ATTORNEY.

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@TATE% OFFICE.

VICTOR J. REED, F ROCKFORD, ILLINOIS.

V PORTABLE RUBBINGJVEACHINE.

To all whom it may, concern Be it known that l, Vioron J. Rune, a citizen of the United States, residing at Rockford, in the county of Winnebago andv State of Illinois. have invented a new and useful Portable Rubbing-Machine, of which the following is a specification, reference being had to the accompanying drawings and to the letters and figures of reference marked thereon. I

The invention relates to the type of machine that is controlled by hand and adapted for various rubbing operations, more especially" for sand-papering or polishing surfaces of furniture or other articles, the invention having reference more particularly to means for removably connecting sandpaper, rubbing felt or similar devices to the machine.

An object of the invention is to provide an improved portable rubbing machine that shall be so constructed as to be adapted tobe operated by various means, as may be, most convenient or desirable in the shop or factory where used.

Another object of the invention is to provide a rubbingmachine of improved construction that shall be provided with means for enabling the operator to quickly change the abrading or rubbing devices on the machine, so as to adapt it for difi'erent classes of work.

The invention consists in an improved rubbing machine having various novel features of construction, more especially with respect to the reciprocating heads thereof, and gearingfor their operation, and also to interchangeable rubbing plates, and to novel means for detachably securing the plates to the heads.

The invention consists also in the novel parts and combinations and arrangements of parts as hereinafter particularly described and further defined in the accompanying claims.

Referring to the drawings, Figure 1 is an end elevation of the improved rubbing machine as preferably constructed; Fig. 2, an inverted plan of the machine; Fig. 3, a vertical longitudinal section on the line A. A

in Fig. 1; Fig. 4, a fragmentary sectional detail of parts of the improved rubbing ma chine; lig. 5, a sectional plan view approach mately on the line B B in 3; Fig. 6. a

-" fragmentary side elevation of the machine;

Fig. 7, a fragmentary transverse section ap- Specification of Letters Patent.

Application filed August 9, 1913.

Patented June 9, 19%;.

Serial No. reacts.

proximately on the line C C in Fig. 3; Fig. 8, a perspective view of one of the interchangeable rubbing plates; and Fig. 9, a perspective view of one of the reciprocating heads inverted.

lin the different figures of the drawings, similar reference characters indicate corresponding elements or features of construction herein referred to in detail.

[ts preferably constructed, the improved rubbing machine comprises a suitable frame 1 adapted to constitute an inclosing housing, the upper middle portion of which is raised as a longitudinal rib and has two transverse openings 2 and 53 therein so that three journal boxes 4,, 5 and 6 are formed, the frame being preferably composed of aluminum, and three bushings comprising journal bearings 7, 8 and 9 are inserted in the boxes, respectively. A. main shaft 10 is rotatably mount ed in the bearings and may extend beyond the frame so that the driving power, such as" a flexible shaft or other means, may be connected thereto. Preferably a spur toothed gear wheel 11 is secured to the shaft in the opening 3 whereby to drive the shaft, and a bevel gear wheel 12 is secured to the shaft in the opening 2 so as to be between the boxes and 6 for transmitting the motion imparted to the shaft. The under side of the top proper of the housing is designed so as to constitute a foundation 13 integrally with the journal box 6, and it is provided with a downwardly extending stub shaft 14 on which is rotatably'mounted a bevel gear wheel 15 that is in mesh with the wheel or pinion 12, the wheel 15 being provided with a crank pin 16 whereby to convert rotary motion into reciprocatory motion for operating the reciprocating heads. The under side of the journal box 5' is provided with 'a foundation plate 1'2 having a stub shaft 18 thereon that extends downward and pref erably has a screw threaded bore in which a screw it) is ren'iovab-ly inserted and provided with a head or collar 20 which is seated against the end of the stub shaft and extends laterally beyond it so as to retain a lever 21 that is rotatably mounted between its ends on the stub shaft, one end portion of the lover being provided with a wrist pin 22. 1t. pitman 23 is connected to the wrist pin and also to the crank pin 16 so that the rotation of the wheel 15 causes oscillation or rocking of the leverzthe latter having also a wrist pin Qt connected thereto in ill proximity to the wrist pin 22, the opposite end portion of the lever 21 being provided with a wrist pin 25.

The side portions of the frame 1 are 5 adapted to guide reciprocating heads and preferably are provided with separate guide bars 26 and 27 suitably secured thereto behind which 'are arranged suitable wearing strips 28 and 29, each strip preferably being L-shaped in cross section and set into suit able recesses in the inner portions of the sides of the frame and so as to present guide faces opposite to the guide bars, whereby to guide two reciprocating heads.

5 Two reciprocating heads 30 and 31 are provided which are substantially alike but arranged in reverse order end to end with their edge portions in sliding arrangement with the guide bars and the wearing strips above described. The heads are provided respectively with arms 32 and 33 assisting to support two wrist pins 34 and 35 that are connected to the heads respectively and to the arms thereon. A pitman 36 is connected to the wrist pins 24 and 34 for moving and controlling the head 30, a pitman 37 being connected with the wrist pins 25 and for operating and controlling the head 31. It will be observed that the lever 21 is support- 30 ed nearly at the middle of the frame and that the pitman 36 extends from the lever toward one end of the frame while the pitman 37 extends from the lever toward the opposite end of the frame, and therefore,

5 when the lever rotates in one direction the heads are moved away each from the other and when the lever moves in the opposite direction the heads are drawn each toward the other, so that the tendency of the rubbing friction of either rubbing head to move the machine frame is counteracted by the other, the frictional resistance, therefore, being neutralized.

The under side of the reciprocating head 30 is provided with transverse tapering jaw bars 38 and 39, the companion head 31 being provided with similar bars 38' and 39', the outer sides of the bars being cut under or inclined, and the bars 38 and 38' are pro vided respectively with guideways 40 and 40 that are adjacent to the under side of the heads. The reciprocating heads are pro vided respectively with pivots 41 and 41 to which levers 42 and 42 are connected, locking bars 43 and 43 being connected to the levers by pivots 44 and 44 respectively, the locking bars extending slidingly into. and are movable through, the guideways 40 and 40 respectively for locking the rubbing so plates to the reciprocating heads.

A suitable number of novel rubbing plates as 45 and 45 are provided and any two of them may be detachably secured to and used at one and the same time in connection with the two reciprocating heads, the plates being designed to be interchangeable, and therefore, are substantially alike. The upper side of the plate 45 is provided with two tapering jaw bars 46 and 47, the plate 45 having similar bars 46" and 47 thereon, the inner sides of the bars being out under or inclined and adapted to slidingly engage the outer sides of the two bars that are on each one of the reciprocating heads, so as to form a dove-tail connection and draw the bars of the plates snugly to the heads. The opposite ends of each plate have bevel faces 48 and 49 respectively on the upper sides thereof against which to secure a sheet of rubbing medium. Each jaw bar 46 and 46 30 has a recess 50 therein to receive either locking bar 43 or 43 which securely locks the plate to the head. The jaw bars that are on the rubbing plates have each a suitable number of guideways 51 therein adjacent to 35 the upper side or top of the plate. Each rubbing plate is provided with two pivots 52 and 53 to which two levers 54 and 55 are respectively connected, the levers being provided with pivots 56 and 57 to which opcrating bars 58 and 59 are connected respectively,.and arranged so as to extend over the bevel faces 48 and 49 respectively and also through the guideways 51 in the jaw bars. The clamp bars 60 and 61 are secured to the outer ends of the operating bars respectively and so as to extend opposite to the ends of the rubbing plate, the inner edges of the bars preferably having inclined faces 62 and 63 respectively that corwe respond approximately to the bevel faces 48 and 49 so that when the clamp bars are drawn forcibly against the bevel edges, the inclined faces 62 and 63 are forced slightly. up the bevel edges so as to tightly draw 5 sheets of sand-paper or other material on the face of the rubbing plate. .The clamp bar 60 preferably is provided with two guide bars 64 and 65 that are slidingly guided in the adjacent jaw bar, the clamp bar 61 be- 1 ing provided with similar guide bars 64 and 65 that are slidingly guided in the adjacent jaw bar. A pair of suitable rubbing sheets 66 and 66, such as sand-paper, felt or other material, are secured to the respective rubbing plates by means of'the clamp bars thereon, as seen more clearly in Fig. 3. The frame of the machine is provided with suitable means for carrying and controlling it, and a suitable motor may be 0 provided for operatin the mechanism of the machine if desired. referably two saddles 67 and 68 are secured upon the top of the frame 1, and a cylindrical housing-like frame member 69 is secured to the saddles and provided with heads 70 and 71 and also with a handle 72 on its top portion, the lat ter preferably having a removable plug 73 in its end. The heads 70 and 71 are provided with journal boxes 74 and 75 respeclib d ll

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oa er? tively in which a shaft 7 6 is rotatably mounted, a spur-toothed gear wheel 77 being' secured to the shaft. The -interior of the frame member is provided with bearings 78 and 79 which support a shaft 80 on which is mounted a toothed. gear wheel 81 that meshes with the wheel 77 and also With the wheel 11, the latter extending through an aperture 82 in the wall of the member 69, so that ower is transmitted from the driving shaft 76 to the main shaft 10. Ample space is provided in the member 69 to receive a motor if desired, which may be connected to the shaft 76. It will be obvious that the rate of speed transmitted from the shaft 76 to the shaft 10 may be reduced by suitable gearing in lieu of the Wheels 77 and 81 if des red, as indicated by dotted lines in Figs. 1, 3 and 6. It isobvious also that if the shaft 76 be extended beyond the head it may be. driven by means of a flexible shaft or otherwise as may be desired.

llt will be understood that the levers on the reciprocating heads and those on the rubbingplatesmay be variously latched to prevent accidental movement when the machine is in operation.

l'n practical use suitable Coverings 66 and (36 are secured to the rubbing plates, and the machine is manually controlled and shifted about as may be required while the gearing is being operated so as to cause reciprocatory movement of the rubbing plates, relatively broad surfaces being covered thereby so that the worlr is rapidly accomplished.

The action of the gearing and several parts obviously will be understood from the description of the construction and function of the various elements of the machine without further explanations.

Portions of the invention relating to the rubbing plate herein described. but which may not be claimed in this application. forms the subject-matter of a divisional application for Letters. Patent, filed November 6, 1913, Serial hl'umber 799,609.

Having thus described the invention, what is claimed as new is-- 1. A rubbing machine including a main frame, a. main shaft rotatably mounted horizontally in the frame, reciprocatory heads mounted in the frame, gearing connecting tue heads with the shaft. a hollow frame member fixedly connected to the main frame,

,, a driving shaft rotatably mounted horiaontall v in the hollow frame member above the main shaft, and gearing connecting the main shaft with the driving shaft.

2. A rubbing machine including" a main frame, reciprocatory heads mounted in the frame, a niain shaft rotatably mounted horizontally in the frame, gearing operatively connecting the heads with the shaft, two saddles spaced apart and fined upon the top of the frame, a hollowframe member,

fixed upon the two saddles, a drivin shaft rotatably mounted horizontally in the hollow frame member above the main shaft, and a plurality of coiiperating toothed gear wheels connecting the main shaft with the driving shaft.

3. A rubbing machine including a frame having two parallel guides, two reciprocating heads slidingly guided bythc two guides, a rocking lever ivotally connected between its ends with t 1e frame between opposite end portions of the frame, a pitman connected to one end portion of the lever and extending from one side thereof toward one end of the frame and connected to one of the heads, and a pitman connected to the opposite end portion of the lever and extending from the opposite side thereof to ward the opposite end of the frame and connected to the remaining one of the heads.

4. A. rubbing machine including a frame, reciprocating heads movably guided by the frame and having each a pair of jaw bars transversely arranged on the under side thereof, the outer sides of the bars being, under-cut and extending along convergent planes, and rubbing plates having each a pair. of jaw bars thereon the inner sides of which are under-cut and extend along divergentplanes and in clutching connection. with the outer sides of the first described jaw bars, t is rubbing plates having each a pair of movable clamp bars on opposite end portions thereof,

' 5. :1 rubbing machine including a frame, two reci n'ocating heads mounted in the frame to move each toward or away from the other, each head being provided with jaw bars and a locking: bar and also a lever connected to the locking bar. means for moving the heads, and two rubbing; plates provided each with two jaw bars for engaging the jaw bars of a head. caclr plate having a recess to receive the locking bar and provided with two indepeudcn tly mow able clamping bars onopposite ends there of, each clamping bar being provided with an operating lever that is pivoted to the plate.

6. lo a rubbing; machine, the combination with a main frame, a main shaft rotatablv mounted horizrmtally in the frame. a plurality of reciprocating heads mounted in the frame. and gearing connecting the heads with the shaft. of an inclosing frame member fixedly connected to the top of the main frame. a controlling handle fixed on the top of the member, a gear wheel secured to the main shaft. and means mounted in the frame member connected with the gear wheel for rotating the main shaft.

7. ln a rubbing machine. the combination of a main frame, a main shaft rotatably mounted in the frame, two reciprocating heads mounted in the frame, two saddles lOCl in mesh with said first described gear wheeh 8. In a rubbing machine, the combination of a frame having journal boxes therein, a

main shaft rotatably mounted in the boxes,

. a bevel pinion secured to the shaft, a stub shaft secured to the under side of one of the journal boxes, a gear wheel rotatably mounted on the stub shaftin mesh with the pinlon and having a crank pin, and a rocking lever mounted on the under side of another one of the journal boxes, with a pitman connected to the crank pin and the lever, two reciprocating heads mounted in the frame, a pitman connected to the lever and one of the heads, and a pitman connected to the lever and the remaining one of the heads.

9. In a rubbing machine, the combination with a main frame, a plurality of reciproeating heads mounted in the main frame, and operating gearing connected with the heads, ofa main shaft rotatably mounted in the frame and connected with the gearing, a gear wheel secured to the shaft, an illclosing frame member fixedly connected to the main frame and having a controlling handle thereon, a. driving shaft rotatably mounted in the frame member, a gear wheel secured to the main shaft, and an intermediate gear wheel rotatably supported in the frame member in operative connection with said two gear wheels.

10. In a rubbing machine, the combination with a reciprocating head, of a rubbing plate having two opposite beveled ends, two clamp bars arranged opposite said ends respectively and having each an operating bar and also two guide bars that are movably guided by said plate, the clamp bars having inclined faces presented opposite to said beveled ends respectively, a rubbing sheet on said plate extending over said beveled ends and engaged by said inclined faces, and two levers pivotally connected to said plate and also to the operating bars of said clamp bars respectively.

11. In a rubbing machine, the combination of a frame having journal boxes therein, a main shaft rotatably mounted in the boxes, a plate secured tothe under side of one of the journal boxes and -having a stub shaft thereon, the stub shaft having a screwthreaded bore therein, a rocking lever mounted on the stub shaft, a screw secured in said bore and having a head thereon seated on the end of the stub shaft and extending under said lever, a pinion secured to the main shaft adjacent to said box, and a gear wheel rotatably mounted on the under side of another one of said boxes in mesh with the pinion and having a crank pin, with a pitman connected to said lever and the crank pin, two reciprocating heads mounted in the frame, a pitman connected to said lever and one of the heads, and a pitman connected also to said lever and the remaining one of the heads.

In testimony whereof, I affix my signature in presence of two witnesses.

VICTOR J. REED.

lvitnesses EDMEE B. FISHER, Bua'rox W. NORTON. 

